3.7V 4600mAh 17.02Wh 774061-2P Lithium Polymer Battery

The lithium polymer battery 774061-2P is a rechargeable 3.7V 4600mAh 17.02Wh power solution with a built-in smart safety chip protecting against overcharge, over-discharge, over-current, short circuit, and overheating. Ideal for space-critical applications like portable electronics, wearables, medical, wireless, robotics, etc. Custom options available.

Features:

• High energy density, thinner and lighter. 300Wh/Kg and even higher, 3~4 times of nickel metal hydride battery.
• High working voltage. Operating voltage range 4.2~3.0V, 3 times of nickel metal hydride battery.
• Great safety and flexible design. Soft case packaging, easy design, no explosion even in the worst case.
• Long cycle life, more than 800 cycles, low self discharge rate, less than 2%/month self discharge rate.
• Wide operation temperature range. charge: 0~45°C; discharge: -20~60°C; storage: -20~40°C.
• Thousands of standard models available and custom design tailored to meet specific requirements.
• Green energy, no harmful metals, RoHS compliance, no pollution, friendly to the environment.

Specifications:

• Name: Lithium polymer battery
• Model: 774061-2P
• Nominal Voltage: 3.7V
• Nominal Capacity: 4600mAh
• Rated Energy: 17.02Wh
• Charging Voltage: 4.2V max
• Charging Current: 2300mA (0.5C) max
• Charging Method: Constant Current/Constant Voltage (CC/CV)
• Discharging Current: 4600mA (1C) continuous max
• Discharging Cutoff Voltage: 3.0V
• Cell Type: A-grade LiPo cell
• PCM/BMS: Integrated PCM and 100K ohms NTC for protection against overcharge, overdischarge, overcurrent, short circuit and overheat
• Terminal: Customizable Connector Molex 2510-3P, 3 wires UL1007 AWG24 35±5mm length, red +, black -, yellow or white ntc
• Dimensions: 65mm x 41.6mm x 16.5mm max
• Weight: 85g approx.
• Environment Conditions: Charge: 0~45°C, Discharge: -20~60°C, Storage: -20~40°C, best 20±5°C for long time storage. Humidity: 85% max.
• Modifications or custom designs available

Application Scenarios:

• Portable Electronics — Bluetooth earphones, wireless headphones, smart pens, digital pens, mini cameras, handheld measurement tools, and portable gaming devices.
• Wearable Devices — Smartwatches, fitness trackers, smart glasses, medical patches, and other body-worn electronics requiring thin, lightweight power sources.
• IoT & Wireless Sensors — Bluetooth beacons, asset trackers, environmental sensors, smart home devices, and wireless communication modules.
• Smart Cards & RFID Devices — Active RFID tags, smart payment cards, access control cards, and other ultra-thin embedded power applications.
• Other devices — where space and weight are the primary constraints.

Charging & Safety Guidelines:
Always follow these guidelines for safe operation and maximum cycle life:

• Use only a charger compatible with the charging specifications of the battery.
• Charge at standard current rate for optimal cycle life; max current rate for faster charging.
• Never charge above the maximum charging voltage to avoid overcharge.
• Do not discharge below the discharging cutoff voltage to avoid overdischarge and prevent permanent damage.
• Do not discharge above the current rating. Exceeding these limits may trigger BMS protection or cause permanent damage to the battery cells.
• Operate the battery within the specified environmental conditions (temperature, humidity, and ventilation).
• Keep the battery away from fire, open flames, radiators, and other heat sources.
• Do not expose the battery to direct sunlight for extended periods during operation.
• Store at 20±5°C for extended periods to maximize longevity. Keep humidity below 85% during storage.
• Do not disassemble, puncture, or expose to fire.

Shipping & Handling Instructions:
To ensure safe transport and compliance with international regulations, please note the following:

• The battery can be shipped by air, sea, and ground transport — subject to applicable dangerous goods regulations for lithium batteries.
• UN38.3 Compliant — The battery has been tested and certified in accordance with UN38.3 for safe air and sea transport.
• Package Properly — Use only UN-certified packaging for lithium batteries. Ensure terminals are protected against short circuits and pack securely to prevent movement during transit.
• State of Charge (SoC) — For transport, maintain the battery at ≤30% state of charge as required by IATA and IMDG regulations.
• Labeling — Packages must display the appropriate lithium battery handling labels and include emergency contact information.
• Documentation — Ensure the shipping declaration includes the proper UN number (e.g., UN3480 for lithium-ion batteries) and your dangerous goods transport documents.
• Prohibited Shipments — Damaged, defective, or recalled batteries are strictly prohibited from transport.

Storage & Long-Term Maintenance:
To ensure maximum service life and maintain optimal cell health, please follow these guidelines for extended storage:

• Optimal Temperature — Store the battery at a stable temperature between 15°C and 25°C (ideal: 20±5°C). Avoid exposure to extreme heat, direct sunlight, or freezing conditions.
• Recommended Humidity — Keep storage environment humidity below 85% to prevent moisture ingress and potential damage to the battery cells and BMS components.
• Partial Charge for Storage — For extended storage (longer than 3 months), maintain the battery at approximately 50%–60% state of charge (around the nominal voltage). Do not store fully charged or fully depleted — both conditions accelerate capacity degradation.
• Periodic Maintenance Cycle — For batteries stored over six months or longer, perform at least one full charge/discharge cycle every six months to maintain cell health. This helps recalibrate the BMS, balance the cells, and prevent voltage drift that can lead to capacity loss.
• Inspect Before Use — Before returning a stored battery to service, inspect for any signs of swelling, leakage, or damage. If the battery voltage is below the discharging cutoff voltage, it has been over-discharged and should not be reused.

💡 Why cycle stored lithium batteries? Cells naturally self-discharge over time, and the built-in BMS circuit consumes a small amount of current even when idle. In multi-cell packs, slight variations in self-discharge rates between cells can gradually cause voltage imbalances. A maintenance cycle keeps the cells electrochemically active, balances the pack, and prevents capacity loss or degradation.